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          tree命令：文件目录结构以树形显示
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        <p>注：此处以centos 7系统为例，在centos 7系统中默认是没有tree这个命令的，需要安装，用下面的命令就可以安装tree这个命令工具</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">sudo yum install tree</span><br></pre></td></tr></table></figure>

<p>安装完成后使用 tree –help 命令可以查看tree命令的使用方法<br><img src="/2019/05/05/2019-05-05-tree%E5%91%BD%E4%BB%A4%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/1558668050830-a2c152ac-52db-47e2-8b39-fe7a19e0ba24.png" alt="lALPDgQ9qtPk6zPNA9bNAzE_817_982.png"></p>
<h3 id="一、常用指令"><a href="#一、常用指令" class="headerlink" title="一、常用指令"></a>一、常用指令</h3><ol>
<li>tree  -a 显示所有文件和目录<br></li>
<li>tree -d 显示目录名称而非内容<br></li>
<li>tree -f 在每个文件或目录之前，显示完整的相对路径名称<br></li>
<li>tree -F 在执行文件，目录，Socket，符号连接，管道名称名称，各自加上”*”,”/“,”=”,”@”,”|”号。<br></li>
<li>tree -r 以相反次序排列<br></li>
<li>tree -t 用文件和目录的更改时间排序<br></li>
<li>tree -L n 只显示 n 层目录 （n 为数字）<br></li>
<li>tree –dirsfirst 目录显示在前，文件显示在后<br></li>
</ol>
<h3 id="二、还可以加的参数"><a href="#二、还可以加的参数" class="headerlink" title="二、还可以加的参数"></a>二、还可以加的参数<br></h3><ol>
<li>-A 使用ASNI绘图字符显示树状图而非以ASCII字符组合。<br></li>
<li>-C 在文件和目录清单加上色彩，便于区分各种类型。<br></li>
<li>-D 列出文件或目录的更改时间。</li>
<li>-g 列出文件或目录的所属群组名称，没有对应的名称时，则显示群组识别码。<br></li>
<li>-i 不以阶梯状列出文件或目录名称。<br></li>
<li>-I 不显示符合范本样式的文件或目录名称。<br></li>
<li>-l 如遇到性质为符号连接的目录，直接列出该连接所指向的原始目录。<br></li>
<li>-n 不在文件和目录清单加上色彩。<br></li>
<li>-N 直接列出文件和目录名称，包括控制字符。<br></li>
<li>-p 列出权限标示。<br></li>
<li>-P 只显示符合范本样式的文件或目录名称。<br></li>
<li>-q 用”?”号取代控制字符，列出文件和目录名称。<br></li>
<li>-s 列出文件或目录大小。<br></li>
<li>-u 列出文件或目录的拥有者名称，没有对应的名称时，则显示用户识别码。<br></li>
<li>-x 将范围局限在现行的文件系统中，若指定目录下的某些子目录，其存放于另一个文件系统上，则将该子目录予以排除在寻找范围外</li>
</ol>
<h3 id="三、使用示例"><a href="#三、使用示例" class="headerlink" title="三、使用示例"></a>三、使用示例</h3><h5 id="1-最简单的使用办法是直接输入tree命令，就会自动给我们以树形的形式列出当前目录的文件和文件夹，不加任何参数，它会自动列表当前目录下面所有深度级别的文件和目录"><a href="#1-最简单的使用办法是直接输入tree命令，就会自动给我们以树形的形式列出当前目录的文件和文件夹，不加任何参数，它会自动列表当前目录下面所有深度级别的文件和目录" class="headerlink" title="1. 最简单的使用办法是直接输入tree命令，就会自动给我们以树形的形式列出当前目录的文件和文件夹，不加任何参数，它会自动列表当前目录下面所有深度级别的文件和目录"></a>1. 最简单的使用办法是直接输入<code>tree</code>命令，就会自动给我们以树形的形式列出当前目录的文件和文件夹，不加任何参数，它会自动列表当前目录下面所有深度级别的文件和目录</h5><p>   <img src="/2019/05/05/2019-05-05-tree%E5%91%BD%E4%BB%A4%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/1558668775209-79b3c292-0ca5-4bbd-b4eb-3f52fee2a531.png" alt="lALPDgQ9qtPxXMnNA4LNAi8_559_898.png"> </p>
<h5 id="2-tree-L-n-，n为数字，表示只查看当前第n级目录和文件"><a href="#2-tree-L-n-，n为数字，表示只查看当前第n级目录和文件" class="headerlink" title="2. tree -L n ，n为数字，表示只查看当前第n级目录和文件"></a>2. <code>tree -L n</code> ，n为数字，表示只查看当前第n级目录和文件</h5><p>   <img src="/2019/05/05/2019-05-05-tree%E5%91%BD%E4%BB%A4%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/1558669178960-22a85c32-3cbd-42fb-9c94-70ef0dd1b8e3.png" alt="lALPDgQ9qtP4EtfNA2vNAbE_433_875.png"> </p>
<h5 id="3-tree-L-n-C-将目录和文件以不同的颜色区分"><a href="#3-tree-L-n-C-将目录和文件以不同的颜色区分" class="headerlink" title="3. tree -L n -C 将目录和文件以不同的颜色区分"></a>3. <code>tree -L n -C</code> 将目录和文件以不同的颜色区分</h5><p>   <img src="/2019/05/05/2019-05-05-tree%E5%91%BD%E4%BB%A4%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/1558669450782-857d6ffe-dddd-4f74-b1e6-821687177136.png" alt="lALPDgQ9qtP8s-bNA1jNAeQ_484_856.png"></p>
<h5 id="4-tree-dirsfirst-L-n-C-目录在前文件在后以不同的颜色显示"><a href="#4-tree-dirsfirst-L-n-C-目录在前文件在后以不同的颜色显示" class="headerlink" title="4. tree --dirsfirst -L n -C 目录在前文件在后以不同的颜色显示"></a>4. <code>tree --dirsfirst -L n -C</code> 目录在前文件在后以不同的颜色显示</h5><p>   <img src="/2019/05/05/2019-05-05-tree%E5%91%BD%E4%BB%A4%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/1558669767351-94d1dec7-b7bf-495b-827d-4891ee4be94d.png" alt="lALPDgQ9qtP_voTNAmLNAkU_581_610.png"></p>
<h3 id="四、导出命令"><a href="#四、导出命令" class="headerlink" title="四、导出命令"></a>四、导出命令</h3><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">tree --dirsfirst -L 2 -C &gt;.&#x2F;test.md # 导出到当前目录下test.md文件中保存 </span><br></pre></td></tr></table></figure>
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